Printing stops after 6 pages

Hello.

Try -D9+p log, maybe that will shed some light on a problem. But even at a first glance there seem to be a memory leak in a printer code, which is probably responsible for your problem. Try the attached patch.

@@ -155,6 +155,7 @@
     if (pipe == NULL)
       error("system(\"%s\") in lpt.c failed, cannot print!\
   Command returned error %s\n", cmdbuf, strerror(errno));
+    free(cmdbuf);
 
     bufsize = ftell(lpt[prnum].file);
     buf = malloc(bufsize);

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